Galvanometer resistance, \(G=15\, \Omega\)
Let resistance \(R\) to be put in series with the galvanometer to convert it into a voltmeter.
\(V=i_{g}(R+G)\)
\(10= 5 \times 10^{-3}(R+15) \)
\( \therefore \quad R=2000-15=1985 \)
\(=1.985 \times 10^{3} \,\Omega \)
(આપેલ છે : $\mu_0=4 \pi \times 10^{-7} \mathrm{TmA}^{-1}$ )